Constructing amide bond carrier transport channels to effectively enhance visible light catalyzed degradation of tetracycline

Abstract

The construction of highly efficient charge transfer channels is crucial for effectively extending the lifetime of photogenerated carriers in heterostructures and enhancing their photocatalytic activity. In this study, ferrocene carboxylic acid (Fc-COOH) was successfully bonded to the surface of amino-modified titanium (Ti) through amide bonding. This modification not only preserved the excellent structure of MIL-125(Ti) but also broadened the light absorption range and effectively prolonged the lifetime of photogenerated charge carriers. The degradation rate of tetracycline by NTFCC-1.0, which exhibited the highest photocatalytic activity, exceeded 90% within 40 min, significantly outperforming the composite sample without amide bond connection. In addition, the mechanism of enhancing photocatalytic activity was further explored, and the toxic side effects of degradation intermediates on the environment were simulated through software. This work presents a novel approach for modifying MOF-based materials.